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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 734 · 40 questions
TalentJR

The fast method (Halve first): Halve the number. × 5: multiply the half by 10. × 50: multiply the half by 100. Odd number? Its half ends in .5 — 43 → 21.5 — and × 10 moves the point: 215.

NameDateTime takenScore ___ / 40
  1. 1.59 × 50 =
  2. 2.46 × 50 =
  3. 3.73 × 5 =
  4. 4.56 × 50 =
  5. 5.87 × 5 =
  6. 6.37 × 50 =
  7. 7.18 × 5 =
  8. 8.28 × 5 =
  9. 9.27 × 5 =
  10. 10.20 × 5 =
  11. 11.53 × 50 =
  12. 12.81 × 5 =
  13. 13.64 × 50 =
  14. 14.75 × 50 =
  15. 15.13 × 50 =
  16. 16.26 × 5 =
  17. 17.31 × 5 =
  18. 18.35 × 5 =
  19. 19.67 × 50 =
  20. 20.98 × 5 =
  21. 21.49 × 5 =
  22. 22.77 × 5 =
  23. 23.28 × 5 =
  24. 24.19 × 50 =
  25. 25.45 × 5 =
  26. 26.89 × 50 =
  27. 27.64 × 5 =
  28. 28.33 × 50 =
  29. 29.78 × 5 =
  30. 30.97 × 5 =
  31. 31.90 × 5 =
  32. 32.17 × 50 =
  33. 33.82 × 5 =
  34. 34.96 × 5 =
  35. 35.83 × 50 =
  36. 36.61 × 5 =
  37. 37.75 × 5 =
  38. 38.46 × 50 =
  39. 39.21 × 5 =
  40. 40.77 × 5 =

Answer key

  1. 2950
  2. 2300
  3. 365
  4. 2800
  5. 435
  6. 1850
  7. 90
  8. 140
  9. 135
  10. 100
  11. 2650
  12. 405
  13. 3200
  14. 3750
  15. 650
  16. 130
  17. 155
  18. 175
  19. 3350
  20. 490
  21. 245
  22. 385
  23. 140
  24. 950
  25. 225
  26. 4450
  27. 320
  28. 1650
  29. 390
  30. 485
  31. 450
  32. 850
  33. 410
  34. 480
  35. 4150
  36. 305
  37. 375
  38. 2300
  39. 105
  40. 385

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